The old Island of Efesto, Greek god of fire, today consists of 4 volcanos. The most striking one is the “Gran Cratere”, characterized by volcanic activity with fumaroles. Along the Isthmus that parts Vulcanello (extinguished crater) from the Island and overlooking the Porto Ponente and Porto Levante bays. Hot water due to submarine boiling caused by the leak of hot gas from the depths make this beach unique.
Porto Ponente’s peculiarity lies in its very fine black sand. Near the Levante port the famous "pozza termale"(thermal pool) can be found. Bubbling and steaming, the brackish water and clay mud, high in Sulphur is said to cure rheumatism and skin diseases.